For Info...it appears its not currently possible to use DPM
on our setup here:
On Saturday 06 August 2005 09:32, you wrote:
> On Fri, 5 Aug 2005, noreply [Alex Martin] wrote:
> > My attempt to add a fairly large (~20TB) filesystem to dpm
> > results in the following error:
> >
> > [root@se01 local]# dpm-addfs --pool Volatile --server se01
> > --fs /pool/data/lcg
> > dpm-addfs Volatile se01 /pool/data/lcg: Value too large for defined
> > datatype
>
> We use statfs/statvfs to get the capacity and the free space on
> the filesystems. Your filesystem is too big and the system call
> returns EOVERFLOW.
> We have to use statfs64/statvfs64.
> So we have to add this method to RFIO and modify DPM to use it.
> This is not a one hour job (much more).
> We will certainly do it, but later.
> However having a huge filesystem like this does not fit very well
> with the DPM architecture. The DPM manages filesystems distributed over
> many servers and will try to optimize the filesystem selection
> according to the I/O load (or even network load). Having a huge
> filesystem like this in the DPM means that the DPM cannot optimize
> anything and must rely on the filesystem optimization...
> May be it's the solution for the future.
> Jean-Philippe
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| Dr. Alex Martin |
| e-Mail: [log in to unmask] Queen Mary, University of London, |
| Phone : +44-(0)20-7882-5033 Mile End Road, |
| Fax : +44-(0)20-8981-9465 London, UK E1 4NS |
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